Database Develop

Explanation of Microsoft Lumia product type, code and firmware.

So, as I've spent a few hours guessing out how the puzzle of type-code-firmware goes, I'll post it here hoping it will help someone:
For every model, there are three variables into consideration.
First is the Product type, in the form RM-xxx. This refers to the hardware specifications of the device, and obviously can't be changed. Different product types mean some major or minor difference in the hardware.
Then is the Product code, in the form of seven alphanumeric digits. Each code corresponds, and is followed by, the product type to which it applies (RM-xxx), plus "VAR" (meaning variant), plus a series of shortened words giving information about what can we expect to find in the firmware: the geographical region and/or country for which it's meant, that will get the OTA (over the air) updates; the brand (service provider) shipped in the firmware (or the letters CV if it's unbranded); the handset colour (only for the default tones we'll find when first powering it up); and some other variable information, like the size of memory, etc. So, it can look like this:
code-------type-----variant---region--provider ------ country memory colour
059T1B8 RM-892 VAR --- EURO SWISSCOM CH ------ 16GB --- GREY
Some of the shorts are easy to guess, some others I have no clue.
Thirdly we have the firmware version, aka ROM or Windows Phone version, which is what we all want to get updated. The version consists of sixteen numbers in groups of four separated by dots. Every Product code ships this or that firmware revision, getting OTA updates every now and then. Different regions, countries or providers get higher updates than others. People in Norway get a different OTA update than those in Hong Kong, and branded phones usually are updated earlier than unbranded ones.
Now, each physical device has a "hardcoded" Product code (that we can find in underneath the SIM-holder). In the example above, it would be a phone bought in Switzerland, sold by Swisscom carrier (and very likely SIM-locked), with 16GB store space, grey colour, and capable of working on certain frequencies. So, now, what can we flash it with? Well, we can flash any Product code as far as it's the same Product type as our phone, without losing any capability. Note: flashing a different Product code will NOT change our phone's original code. And when we switch on the phone, we'll get what we flashed: a default language or set of languages, perhaps a service provider logo, a default colour for the tiles and apps, and of course the features that Bill Gates' staff fancied and condescended to include in the corresponding firmware update. So, if we want the latest version, probably we'll have to flash a Product code not corresponding to our country or region, though I assume that all of them have, at least, English built in. It might also happen (this is my guess) that certain firmwares don't include a setting for LTE, if there is no LTE in the country for which it's meant, even though the device is LTE-capable.
Now, is it possible to flash a Product code corresponding to a different Product type? Yes, but we may lose some capabilities. For example, the Microsoft Lumia 925 is RM-893 in North America and RM-892 in Eurasia. They're capable of different frequencies for the 3G and 4G bands. So, cross-flashing will make us lose all the frequencies not matching both Product types: some because of the hardware, some because of the software. Not much to lose if, in exchange, we're getting a newer Windows Phone version; because, sorry to say, WP really sucks, and the sooner we get the updates, the better. After all, who can yet enjoy LTE? I bet that 97% of the Lumia owners can't.
So far all what I've found about this topic. Enjoy and, if you find I wrote something wrong, please let me know.

Enough good writing/abstract

Finding Product Code and Firmware
What if my product code is not listed anywhere and I want to flash the firmware? Anyway to find it?
Also, NSU's Data Package Manager gives firmware details according to product code, how can I get firmware of different product code to suite my device? Sorry for being noob here.

GizamoGeek12 said:
What if my product code is not listed anywhere and I want to flash the firmware? Anyway to find it?
Also, NSU's Data Package Manager gives firmware details according to product code, how can I get firmware of different product code to suite my device? Sorry for being noob here.
Click to expand...
Click to collapse
You want what to as product code?

anaheiim said:
You want what to as product code?
Click to expand...
Click to collapse
I received my device as a gift without any boxing or wrapping. Also, it's firmware is pre-release. What I can see only is it's type, which is RM-877 and it is a AT&T variant.
NSU, needs product code to get new associated firmware. And I can't find it anywhere. So, is there any tool/key combination which can detect and tell me the product code?
And what if the product code I find, is not listed?
Thanks for the help.

GizamoGeek12 said:
I received my device as a gift without any boxing or wrapping. Also, it's firmware is pre-release. What I can see only is it's type, which is RM-877 and it is a AT&T variant.
NSU, needs product code to get new associated firmware. And I can't find it anywhere. So, is there any tool/key combination which can detect and tell me the product code?
And what if the product code I find, is not listed?
Thanks for the help.
Click to expand...
Click to collapse
Your 1020 is black color?
I find this AT&T Product Code 059S9T1 RM-877 VAR NAM US ATT SL BLACK (if your 1020 is black color).

anaheiim said:
Your 1020 is black color?
I find this AT&T Product Code 059S9T1 RM-877 VAR NAM US ATT SL BLACK (if your 1020 is black color).
Click to expand...
Click to collapse
Thanks a lot.
Sorry, but this is getting exciting for me and just want to confirm before going ahead.
Yes, my device is Nokia Lumia 1020 Black with RM-877_nam_usa_005.
However, current firmware is 3042.0000.1321.10102 (I believe it is pre-release)
So I hope flashing this device with RM-877 VAR NAM US ATT SL BLACK wont brick my device. I heard that AT&T 1020 devices are bit tricky to flash.

GizamoGeek12 said:
Thanks a lot.
Sorry, but this is getting exciting for me and just want to confirm before going ahead.
Yes, my device is Nokia Lumia 1020 Black with RM-877_nam_usa_005.
However, current firmware is 3042.0000.1321.10102 (I believe it is pre-release)
So I hope flashing this device with RM-877 VAR NAM US ATT SL BLACK wont brick my device. I heard that AT&T 1020 devices are bit tricky to flash.
Click to expand...
Click to collapse
I have find your hard Product Code (this you currently have), it is 059T8D2 PWBASSY RM-877 LIGHT SWAP ENG 64G GLOBAL. The Firmware of your Hard Product Code is 3049.0000.1330.1000.
Try to flash your Nokia Lumia 1020 with Product Code I have gave you (059S9T1 RM-877 VAR NAM US ATT SL BLACK, the Firmware is 3051.40000.1346.0001, GDR3, Lumia Black).

Nokia Lumia 625 India Variant
I have purchased a Nokia Lumia 625 in India "059T1M1 RM-941 VAR IMEA IN CV" I don't get the highest connection speed as 4G when I travel to UK or Malaysia and use a 4G enabled SIM. Can I cross flash it "059T454 RM-941 VAR EURO GB CV" and will this enable 4G option or can I just replace this file "NWP8 simlock 3gstandard bb5 crcA59A.bin" from the Euro ROM to the Indian ROM and flash to the get the 4G option enabled?

Lumia 520
Hy, i have Lumia 520 RM-914_im_mea3_319 059S3W7, would like to flash to have black update!!! can you help me out, wouldnt want to up having a brick for a phone. PS this is my first time ever flashing a phone and i want to be sure that i know what i'm doing. Thanks alot

prabu said:
I have purchased a Nokia Lumia 625 in India "059T1M1 RM-941 VAR IMEA IN CV" I don't get the highest connection speed as 4G when I travel to UK or Malaysia and use a 4G enabled SIM. Can I cross flash it "059T454 RM-941 VAR EURO GB CV" and will this enable 4G option or can I just replace this file "NWP8 simlock 3gstandard bb5 crcA59A.bin" from the Euro ROM to the Indian ROM and flash to the get the 4G option enabled?
Click to expand...
Click to collapse
Changing this file will not help. MD5 signature of two files are identical, as you can see (click on image to enlarge):
dino520 said:
Hy, i have Lumia 520 RM-914_im_mea3_319 059S3W7, would like to flash to have black update!!! can you help me out, wouldnt want to up having a brick for a phone. PS this is my first time ever flashing a phone and i want to be sure that i know what i'm doing. Thanks alot
Click to expand...
Click to collapse
059S3W7 RM-914 VAR IMEA-MEA3 AE BH KW OM QA+ AV has already obtained GDR3/Lumia Black (3056.40000.1349.2001). You are sure that these updates are not proposed to you?

Lumia520rocks
I had some issues but was able to flash without further problems... My lumia never got the updates OTA but thanks to YOU I have them now via Nokia Care Suite. Everything working perfectly! Thanks a 1000 times...

Question about LTA and SWAP
I'll looking at this firmware:
059S2D2 RM-915 LTA SWAP
Any idea what LTA and SWAP mean? Is this an unbranded firmware I can use in the US (on ATT/Cricket)?
Thanks for any insight.

jrob127 said:
I'll looking at this firmware:
059S2D2 RM-915 LTA SWAP
Any idea what LTA and SWAP mean? Is this an unbranded firmware I can use in the US (on ATT/Cricket)?
Thanks for any insight.
Click to expand...
Click to collapse
Look here http://forum.xda-developers.com/showthread.php?t=2515453
LTA/LATAM = Latin America
SWAP = I don't know

anaheiim said:
Look here http://forum.xda-developers.com/showthread.php?t=2515453
LTA/LATAM = Latin America
SWAP = I don't know
Click to expand...
Click to collapse
Thanks! I also had a question about another product code:
059T104 RM-915 VAR US ATT IDB PIB SL
Not sure what the IDB and PIB stand for.
I understand that 059T105 RM-915 VAR US ATT PAYG SL would be the GoPhone version and 059S925 RM-915 VAR US ATT SL would be a postpaid one i'm assuming, but can't imagine what difference the 3rd would be. Thanks again!

jrob127 said:
Thanks! I also had a question about another product code:
059T104 RM-915 VAR US ATT IDB PIB SL
Not sure what the IDB and PIB stand for.
I understand that 059T105 RM-915 VAR US ATT PAYG SL would be the GoPhone version and 059S925 RM-915 VAR US ATT SL would be a postpaid one i'm assuming, but can't imagine what difference the 3rd would be. Thanks again!
Click to expand...
Click to collapse
Because I'm not North-AM, I do not know the intricacies (GoPhone, postpaid, etc) of mobiles operators of there
But yes, it is possible.

Lumia 520 : RM-914_apac_taiwan_473
Hi, I'm not sure to be on the correct thread. I apologize in advance. I've bought the phone recently. I'm planning to use it in Argentina. I'm waiting for the windows 8.1 update which is being delivering on these days. It doesn't arrive to my phone. I've been trying to find out if my CORE BUILD ID: 3056.40000.1349.10387 is included on this update. I can't find any information on it. I've found information about some other similar CORE BUILD ID: 3056.40000.1349.xxxx, but nothing about mine, which finish on 10387. I don't know what these numbers means. I'd appreciate any information and advice. What should I do to get the update (flash another rom, change product code, whatever)
Sorry for my bad English
My phone information:
CODE: 059T610
MANUFACTURER NAME: RM-914_apac_taiwan_473
MOBILE OPERATOR: 000-TW
CONFIGURTION ID: 379389
CORE BUILD ID: 3056.40000.1349.10387
APPLICATION VERSION: 3.9.2.1

betulin said:
Hi, I'm not sure to be on the correct thread. I apologize in advance. I've bought the phone recently. I'm planning to use it in Argentina. I'm waiting for the windows 8.1 update which is being delivering on these days. It doesn't arrive to my phone. I've been trying to find out if my CORE BUILD ID: 3056.40000.1349.10387 is included on this update. I can't find any information on it. I've found information about some other similar CORE BUILD ID: 3056.40000.1349.xxxx, but nothing about mine, which finish on 10387. I don't know what these numbers means. I'd appreciate any information and advice. What should I do to get the update (flash another rom, change product code, whatever)
Sorry for my bad English
My phone information:
CODE: 059T610
MANUFACTURER NAME: RM-914_apac_taiwan_473
MOBILE OPERATOR: 000-TW
CONFIGURTION ID: 379389
CORE BUILD ID: 3056.40000.1349.10387
APPLICATION VERSION: 3.9.2.1
Click to expand...
Click to collapse
Hi,
Do not look at the "core build", because no use. You must look at the firmware version in settings hub > about.

anaheiim said:
Hi,
Do not look at the "core build", because no use. You must look at the firmware version in settings hub > about.
Click to expand...
Click to collapse
Many thanks, I've found it.
It is : 3056.40000.1349.10387.2001 and is "under testing".
As I wrote on my last post, this phone is to be used in Argentina. It's a present. I wonder what should I do? Do I flash the phone with Latin America firmware (having present that these firmwares are RM-915 and mine is 914)? Should I keep the original of the device? Other possibility could be flash it with Spain firmware which is 914, update is already available. Maybe I'd better wait the original firmware, right?

betulin said:
Many thanks, I've found it.
It is : 3056.40000.1349.10387.2001 and is "under testing".
As I wrote on my last post, this phone is to be used in Argentina. It's a present. I wonder what should I do? Do I flash the phone with Latin America firmware (having present that these firmwares are RM-915 and mine is 914)? Should I keep the original of the device? Other possibility could be flash it with Spain firmware which is 914, update is already available. Maybe I'd better wait the original firmware, right?
Click to expand...
Click to collapse
AR CV is RM-915, so this means that you can most certainly not use AR CV (since almost certain impossibility to flash RM-914 > RM-915).
You can use ES CV (Spain) if you want yes: 059S5D4 RM-914 VAR ES CV

[Q] Microsoft Store Unlocked 1020 (RM-877) ROM Product Code

Anyone know the ROM product code from the unlocked Lumia 1020 (RM-877) being sold at the Microsoft Store in the U.S. and Canada? Looking to download the ROM but need the product code. BTW, I'm flashing a Canadian 1020, but the Americans out there might want to try this on an AT&T 1020.
Thanks in advance!

mdducharme said:
Anyone know the ROM product code from the unlocked Lumia 1020 (RM-877) being sold at the Microsoft Store in the U.S. and Canada? Looking to download the ROM but need the product code. BTW, I'm flashing a Canadian 1020, but the Americans out there might want to try this on an AT&T 1020.
Thanks in advance!
Click to expand...
Click to collapse
You want flash a AT&T ROM, right?

Unbranded ROM
Actually what i am trying to do is replace a branded canadian rom with a unbranded one, the problem is finding the product code on the one sold at the microsoft store so i can download it. The problem is not technical, i am just looking for the 7 character code. why i mentioned AT&T is because it may work to replace the AT&T rom, someone may want to give it a try.

mdducharme said:
Actually what i am trying to do is replace a branded canadian rom with a unbranded one, the problem is finding the product code on the one sold at the microsoft store so i can download it. The problem is not technical, i am just looking for the 7 character code. why i mentioned AT&T is because it may work to replace the AT&T rom, someone may want to give it a try.
Click to expand...
Click to collapse
There are currently no unbranded ROM for USA or Canada.
"sold at the microsoft store" = I guess they sell with unbranded ROM (for compatible country).
- Either you take the AT&T ROM.
- Either you take a unbranded ROM of country other than those mentioned above.
059V0R9 RM-877 LTA VAR AR CV SKD is the only unbranded ROM for RM-877, it is Argentina.

Microsoft store links to unlocked 1020
The phones in question are:
For canada - microsoftstore.com/store/msca/en_CA/pdp/Unlocked-Nokia-Lumia-1020/productID.305260100
For US - microsoftstore.com/store/msusa/en_US/pdp/Unlocked-Nokia-Lumia-1020/productID.304844200
on the US page they say "This unlocked phone can be used with either AT&T or T-Mobile. It is not compatible with Verizon or Sprint. SIM card not included." as the AT&T version has AWS disabled, i am assuming it has a different ROM to allow full use on T-Mobile. Also, they only started selling these versions a few weeks ago, so i figure the product code is new, which is why it is not in the links in anaheiim's lumia unbranding thread. (The unbranding thread is very good BTW, thanks anaheiim!)

As I've said here, there is no unbranded ROM for the American or Canadian NL1020.
However, you can try:
- Either you take the AT&T ROM.
- Either you take a unbranded ROM of country other than those mentioned above.
059V0R9 RM-877 LTA VAR AR CV SKD is the only unbranded ROM for RM-877, it is Argentina.
Click to expand...
Click to collapse
And there is no ROM TMOUS for NL1020.

Version name
the rom in question is RM-877_nam_usa_957, microsoft started selling these on 14 july 2014. i just cant find the product code, also not in navifirm+. im not in a city that has a microsoft store, so i can't walk in and ask to see a device...

mdducharme said:
the rom in question is RM-877_nam_usa_957, microsoft started selling these on 14 july 2014. i just cant find the product code, also not in navifirm+. im not in a city that has a microsoft store, so i can't walk in and ask to see a device...
Click to expand...
Click to collapse
Where did you find RM-877_nam_usa_957 value?
Because, as you have said, on Nokia servers, RM-877_nam_usa_957 does not refer to any ROM/Product Code.

anaheiim said:
Where did you find RM-877_nam_usa_957 value?
Because, as you have said, on Nokia servers, RM-877_nam_usa_957 does not refer to any ROM/Product Code.
Click to expand...
Click to collapse
Here's all the info that I found on the other forum:
The code under the little flap, SIM door: 059W473
On the box or package: RM-877 NA OM BLACK
On phone
Extra Info: RM-877_nam_usa_957
About: Nokia Lumia 1020 Unlocked
Model: Nokia 909
But as far as i know ROM is not available yet...

mietek190 said:
Here's all the info that I found on the other forum:
The code under the little flap, SIM door: 059W473
On the box or package: RM-877 NA OM BLACK
On phone
Extra Info: RM-877_nam_usa_957
About: Nokia Lumia 1020 Unlocked
Model: Nokia 909
But as far as i know ROM is not available yet...
Click to expand...
Click to collapse
Thanks for the informations.
But the Product Code does not exist (or is not referenced) on Nokia servers...

059w473: Rm-877 var nam 4r cv black
anaheiim said:
Thanks for the informations.
But the Product Code does not exist (or is not referenced) on Nokia servers...
Click to expand...
Click to collapse
I can confirm that the product code began existing at some time since the previous post. I have downloaded and attempted to flash my AT&T Lumia 1020 RM-877 but without success.

bump for more ansers

Help!?! - Can't flash with 059W473
Hello there, hopefully one of you guys with more experience can help me out here.
059T019 (AT&T - NAM -Yellow) Core Build ID - 3051.500009.1425.10367
I'd like to use the Unbranded ROM 059W473 - 3051.50009.1424.0002 that shows in NCS
When flashing I get the standard error that "I have chosen the not assigned product code for this device" and I 'OK' that.
Then it appears to starts updating and I get this:
0xFA001304 - Platform ID check fails reasons the FFU file is not meant for this product. The platform ID image does not match with the platform ID of the device and it fails out.
Any ideas?

anaheiim said:
Thanks for the informations.
But the Product Code does not exist (or is not referenced) on Nokia servers...
Click to expand...
Click to collapse
In Navifirm+ you can search for the product code. Weirdly, it's greyed out but does register as a legitimate code and I am able to download the ROM.

AR2186 said:
In Navifirm+ you can search for the product code. Weirdly, it's greyed out but does register as a legitimate code and I am able to download the ROM.
Click to expand...
Click to collapse
Hi,
I know (since long) that this product code is available on the Nokia Care servers
Except that when I posted the message that you quoted, well this product code was not yet present at the Nokia Care servers.

anaheiim said:
Hi,
I know (since long) that this product code is available on the Nokia Care servers
Except that when I posted the message that you quoted, well this product code was not yet present at the Nokia Care servers.
Click to expand...
Click to collapse
Realized that after posting, my bad. Thought it was a more recent post for some reason, but its still weird it doesn't show up properly

Has anyone figured out how to flash a non-AT&T ROM to an AT&T device?

johndoh0 said:
Has anyone figured out how to flash a non-AT&T ROM to an AT&T device?
Click to expand...
Click to collapse
Sell your AT&T device, and buy a Canadian or Latin American one. Preferably unlocked.

[Q] Switch RM-codes on Lumia 925??

I put this here because I don't know where to place this question.
I have a Nokia Lumia 925.1 with RM-892 code and I would like to know if I could flash the firmware for the RM-893 version on my phone (mainly because I want to enable the 3G AWS bands).
Would I be able to get AWS on the phone or it won't work?
Thanks beforehand.

cybermiguel said:
I put this here because I don't know where to place this question.
I have a Nokia Lumia 925.1 with RM-892 code and I would like to know if I could flash the firmware for the RM-893 version on my phone (mainly because I want to enable the 3G AWS bands).
Would I be able to get AWS on the phone or it won't work?
Thanks beforehand.
Click to expand...
Click to collapse
Hi,
No, you can't.

Flash non carrier firmware on Lumia

Hi,
I want to flash on my Lumia 435 a non carrier firmware without all the bloatware (5-6 apps to be exact). And my questions are:
Where can I find the firmware that is not branded ?
What tool should I use to flash the firmware ?
Thanks !

Eurofighter_ty said:
Hi,
I want to flash on my Lumia 435 a non carrier firmware without all the bloatware (5-6 apps to be exact). And my questions are:
Where can I find the firmware that is not branded ?
What tool should I use to flash the firmware ?
Thanks !
Click to expand...
Click to collapse
Hi,
See my tutorial: http://forum.xda-developers.com/showthread.php?t=2515453

Khaagan said:
Hi,
See my tutorial: http://forum.xda-developers.com/showthread.php?t=2515453
Click to expand...
Click to collapse
Hi,
Thanks ! I flashed the German version using a product code found on the Google but where can I find all the product codes for lumia 435 beause on that list I found just some not all of them. I am searching for Romanian (RO) country variant but I don't know where can I find the product code.
Thanks again for help !

Eurofighter_ty said:
Hi,
Thanks ! I flashed the German version using a product code found on the Google but where can I find all the product codes for lumia 435 beause on that list I found just some not all of them. I am searching for Romanian (RO) country variant but I don't know where can I find the product code.
Thanks again for help !
Click to expand...
Click to collapse
What is the product type (RM-xxxx) of your Lumia device?

Khaagan said:
What is the product type (RM-xxxx) of your Lumia device?
Click to expand...
Click to collapse
Is RM-1071

Eurofighter_ty said:
Is RM-1071
Click to expand...
Click to collapse
Ok, Thx.
So, flash 059X0Q6 RM-1071 VAR EURO 7F CV.

Hi,
sorry for being (a little?) off-topic, but i've not found a better place to ask: is there a way to unlock this phone from Orange Romania? Product code is 059x0g9. I've followed the tutorial, and i've flashed the firmware recommended above, but when inserting a SIM card from Telecom (a T-Mobile subsidiary), it complains that the phone is locked into other operator's network.
Would i have a better chance by flashing a Vodafone Romania firmware and using one of those cards? Or is this phone doomed to be part of Orange network forever?
Regards,
Cornel

[Q] unlocked SM-N920A for europe ?

Hi
the SM-N920A has all the needed lte bands for europe: 1800, 2600 and 800.
It is an AT&T phone but unlocked for gsm worlwide.
Do you think that it will work correctly ?
Thx for your help

The N920a Works perfect for me in germany. All lte bands are compatible

where did you get n920a version ?

i have a brand new 64gb black N920A for sale in uk it is unlocked

Hi guys!. I Have the same smartphone (Sm-N920A). How are you doing with updates?. I can't update mine!

Redjohn90 said:
Hi guys!. I Have the same smartphone (Sm-N920A). How are you doing with updates?. I can't update mine!
Click to expand...
Click to collapse
Did you try to upgrade it through Smart Switch?

Uzair40 said:
Did you try to upgrade it through Smart Switch?
Click to expand...
Click to collapse
Yes. I do not detect any upgrade. You have done it?

Redjohn90 said:
Yes. I do not detect any upgrade. You have done it?
Click to expand...
Click to collapse
Then download a stock ROM and flash it using Odin.

Uzair40 said:
Then download a stock ROM and flash it using Odin.
Click to expand...
Click to collapse
Excuses are not very practical. Could you explain better. But I can flash with Odin, the bootloader is not locked?

Redjohn90 said:
Excuses are not very practical. Could you explain better. But I can flash with Odin, the bootloader is not locked?
Click to expand...
Click to collapse
Did you get anywhere with this? I have an unlock SM-N920A and want to update to Marshmallow

So N920A or N920T unlocked version work without problem in EU? But, how about custom roms, because I see what developer works for F/I/C/L/K/S/G models, A and T less interest.
I looking to buy note 5 from USA (because C models in EU 1.5-2 times expensive).

paulyz said:
So N920A or N920T unlocked version work without problem in EU? But, how about custom roms, because I see what developer works for F/I/C/L/K/S/G models, A and T less interest.
I looking to buy note 5 from USA (because C models in EU 1.5-2 times expensive).
Click to expand...
Click to collapse
Not sure. Have you seen this thread?
http://forum.xda-developers.com/note5/help/sm-920f-actually-sm-920a-3-uk-updating-t3508798

dmlargo said:
Not sure. Have you seen this thread?
http://forum.xda-developers.com/note5/help/sm-920f-actually-sm-920a-3-uk-updating-t3508798
Click to expand...
Click to collapse
so you had problem with OTA, but after everything OK? because, I will root phone. What about GSM frequencies, 3G 4G works good? Did you tried custom roms? Did you have any problems?
Thanks for answer.

AT&T phones will have severe problems with ota updates. You must connect to the AT&T network to receive OTA. Odin firmware cannot download. Updates are useless unless you are on AT&T

justinxfan said:
AT&T phones will have severe problems with ota updates. You must connect to the AT&T network to receive OTA. Odin firmware cannot download. Updates are useless unless you are on AT&T
Click to expand...
Click to collapse
but custom roms works without problems? But custom roms works only from AT&T threads, not main?